Auto-injector



FIG. 1 is front perspective view of an auto-injector showing my new design;

FIG. 2 is first end elevation view thereof;

FIG. 3 is second end elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The features shown in broken lines depict environmental structure only and form no part of the claimed design. 

CLAIM The ornamental design for the auto-injector, as shown and described. 